Full readonly check

[fio.git] / engines / mmap.c

diff --git a/engines/mmap.c b/engines/mmap.c
index 95ad1d842250049162564a078864070cc28c8f2e..604f8b0902e75d9c0af70eca7ad8996b4c77f57d 100644 (file)
--- a/engines/mmap.c
+++ b/engines/mmap.c
@@ -19,6 +19,8 @@ static int fio_mmapio_queue(struct thread_data *td, struct io_u *io_u)
        struct fio_file *f = io_u->file;
        unsigned long long real_off = io_u->offset - f->file_offset;
 
+       fio_ro_check(td, io_u);
+
        if (io_u->ddir == DDIR_READ)
                memcpy(io_u->xfer_buf, f->mmap + real_off, io_u->xfer_buflen);
        else if (io_u->ddir == DDIR_WRITE)
@@ -60,6 +62,12 @@ static int fio_mmapio_open(struct thread_data *td, struct fio_file *f)
        if (ret)
                return ret;
 
+       /*
+        * for size checkup, don't mmap anything.
+        */
+       if (!f->io_size)
+               return 0;
+
        if (td_rw(td))
                flags = PROT_READ | PROT_WRITE;
        else if (td_write(td)) {